[jira] [Created] (FLINK-4189) Introduce symbols for internal use

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-4189:
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             Summary: Introduce symbols for internal use
                 Key: FLINK-4189
                 URL: https://issues.apache.org/jira/browse/FLINK-4189
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Timo Walther
            Assignee: Timo Walther


Currently we are using integer values to pass Calcite SQL symbols down to code generation. This causes problems like in FLINK-4068. We should support symbols internally.



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